Method of filling and indurating porous material and the product thereof.



I larly,

i the ing . UNITED STATES PAT NT OFFICE,

wIN'rwoR'rHv. LA DEn, or NEWTON, MASSACHUSETTS, ASSIGNOR 'ro GENERAL INDURATI G CORPORATION, A coRroRA'rIoN on NEW- YORK.

METHOD or rILLrNeAND NDURATING roao'us MATERIAL-AND THE PRODUCT i e THEREOF.

1 2f8 9 43 Specification of Letters Eaten.

No Drawing.

To-all whom it may concern: i

Be it known-that I, W INTwoii'rrr V. LAN-9 DER, citizen oflthe United Stateaa nd resident of Newton, in the county of Middlesex Filling and Indurating Porous Material and Product Thereof, of which the following a specification. j' j This invention relates to a method of fill-.,

and-.indurating porous material such as fiber board,'or other fibrous or granular material, and also toa method ofboth indurating and waterproofing such material, and I the. resulting product. p The type of porous materlal which I prefer to use, is that made of fibers, and may be made by any suitable'method'. Particu- I recommend wood pulp for making the board ,sheet, article or body to be treated, of whatever shape may be desired. Such material is porous and absorbent, and although possessing or hardness, is cheap and admirably adapted to my. process. The fibrous material may be composed ofa uniform and homogeneous mass of fibers throughout, orit may be of a solvent and built up of layers offfiber boards held together by a suitable cement or binder, such asisilicate of soda.

" The method consists in filling the porosities or interstices of the material, whether it be fibrous or granular, W1th an elastic cem entitious filler. comprising a gum or-resin,

such as common rosln, and the residue from the distillation of petroleum, whi ch is'a yellowish brown jelly-like substance, the two bein in such proportion that the resin preponderates over the petroleum residue, so that the resulting composition manifests the hardness of the resin, qua-lifiedby thesofter and lubricant petroleum residue to such extent that the composition does not manifest f the brittleness which is characteristic of resins. The composition is introduced into the porous or interstitial material .bymeans carrier, such as 'gasole'ne.

I -The composition and method herein described and claimed constitute. a special instance ofa composition and -method more comprehensively described and claimed in the application for patent filed by me on- December 20, 1916, Serial No. 137,959. It is desirable that the mixture be used hot to.

have invented littleinherent strength I the pores.

insure @a sufficiently thin consistency for effective penetration of the material. After Patented se als, 191s. Application filed November 8, 1915. Serial No. 00,369;

thus filling the porosities, either through and'through, or to the desired depth, the

treated material isdried. To describe with more particularity and method: I mix common rosin of any desired grade and gasolene, in the proportions of about 4' pounds of rosin to 1 gallon of gaso-p lene (approximately 6 pounds). The gasolene dissolves the rosin, any sediment or d rt settling to the bottom, and the clear solutlon, which is made cold or at normaltemperature, is poured ofi'. With this solution (approximately) 10 ounds of the solution,

and the mixtureis tien preferably heated.

The porous material to be treated is then mixture. The material to be treated is itself preferably heated before treatment and although it'may not, always beessential, that the mixture be used hot, otherwise it may immersed in, or sprinkled with, the said be toothick and viscous readily to penetrate process is to place the mixture in a deep ves-' sel over a gas flame. After the material has gone completely into solution, the temperature is raised to the point ofebullition of the solvent and carrier. This tends to cause a distillation of the gasolenebut the depth of the vessel maybe such that the gasolene vapors do not rise above the top of the vessel and escape in appreciable quantity, since the upperpart of the vessel and the surface or layer of cool air aboveact as a condenser to return the gasolene vapors to the solution.

.The material to be treated when placed in,

the hot solution "causes a more violent ebullition, which is probably due in large part to displacement of air from the porosities of the material, for the-ebullition soon substantially subsides. 1

The treated material, when taken from the v A good mode of performing the 60 detail the preferred exemplification of my melting point of the order of 120 to 130 F, and is a mixture of saturated and unsaturated hydrocarbons. The residue comprises olefins, naphthenes, and parafiins in amorphous form, but contains no parafiin as such,

that is, no parafiin in crystalline commercial form. Most of the parafiin is removed from the crude petroleum in the form of parafiin 1' -Wax before the residue which I employ is arrived at.

I claim:

1. The method of treating porous material, whether fibrous orgranular, which consists in filling the porosities of the material with a filler comprising a resin and petroleum residue dissolved in an evaporable car-' rier, the amount of resin being at least of the-order of the amount of petroleum residue, and thereafter removing the carrier from the material by evaporation.

2. The method of indurating porous ma- I 'terial, whether fibrous or granular, which consists in impregnating it with an evaporable solution of a cementitious filler comprising a resin and petroleum residue, the amount of resin being at least of the order of the amount of petroleum residue, at a temperature approximating to the boiling point of the evaporable solvent, and there.- after removing the solvent from the material by evaporation.

3. The method of indurating porous material, whether fibrous or granular, which.

consists in impregnating it with a solution 'ofa cementitious filler comprising a resin and petroleum residue in an evaporable solvent, bathing the surface of the impregnated material in vapor of the solvent,and thereafter removing the solvent from the material by evaporation. 4. The method of indurating porous material, whether fibrous or granular, which consists in filling the porosities of the material with a cementitious filler comprising a gum or resin-like substance and a residue.

fromthe distillation of oils, dissolved in a suitable solvent and carrier, thereafter bathing the surface in the condensing vapors of the carrier, and thereafter removing the car'- rier from the porosities by evaporation. .5. Porous material, whether fibrous or granular, having its porosities impregnated with a composition of a resin and petroleum residue wherein the former predominates.

6. The method of indurating porous material, whether fibrous or granular, which consists in filling the porosities of the material with a cementitious filler comprising a resin and petroleum residue wherein the former predominates, dissolved in gasolene, and

thereafter removing the gasolene from the material by evaporation.

7. The method of indurating porous material, whether fibrous or granular, which consists in impregnating it with an evaporable solution in gasolene, of a cementitious filler comprising a resin and petroleum residue wherein the former predominates, at a temperature approximating to' the" boiling point of the evaporable solvent, and thereafter removing the gasolene from the material by evaporation.

8. The method of indurating porous ma-.

terial, whether fibrous or granular, which of a cementitious filler comprising a resin and petroleum residue in gasolene, bathing the surface of the impregnated material in vapor of the gasolene, and thereafter removing the gasolene from the material by evaporation.

fiber board indurated with a composition of resin and petroleum residue in which the amount of resin is at least of the order of the amount of petroleum residue. V

10. The method of treating porous material which comprises impregnatingthe material with a solution comprising resin and petroleum'residue in an evaporable carrier,

and thereafter bathing the surface of the im-' pregnated material in vapor'of the solution.

11. The method of treating porous material which comprises impregnating thematerial with a. composition comprisingresin and petroleum residue in an evaporable carrier, bathing the surface ofthe impregnated material in vapor of the carrier, and there-; afte'r removing'the'carrier from the material.

12. The method of treating porous mateconsists in impregnating it with a solution 9o 9.;An article of manufacture comprising rial which comprises impregnating the material in afilling solution comprising a volatile solvent and at a temperature suflicient to give off a vapor, and thereafter bathing the surface ofthe impregnated material in the vapor of the solut on under such conditions'as to remove the filling matter from p the surface of the material.

Signed by me at Boston, Massachusetts,

this 5th day of November, 1915. I

WIN-TWORTH V. LANDER. V 

